A fusion diversity reception algorithm based on advanced D-S theory of evidence

Antenna selection technology in MIMO diversity system can achieve almost the same diversity gain as omni-directional antenna without increasing the radio frequency link in system. Several drawbacks exist in commonly used diversity reception method since it only considers the intensity fading of signal rather than content analysis and comparison of signal. In this paper, we study the current wireless communication system and information fusion technology intensively to improve current diversity reception algorithms. We propose a novel algorithm of fusion in decision level, which is a diversity reception algorithm using “Additional law of large numbers” which is based on advanced D-S theory of evidence (ADSA). We conduct fusion processing according to the uncertainty and nonlinear of each sub-source information, and in this way we can improve the performance of communication system as well as capability of resisting bit error rate (BER). In the simulation experiments, we make a comparison between our algorithm and Maximal Ratio Combining (MRC) diversity algorithm, the result proves the efficacy of our algorithm. Furthermore, our research provides a new way to explore the performance improvement of wireless communication system.